Harness for cross-weaving.



J. KAUFMANN.

mnms FOB (moss WEAVING.

APPLICATION FILED MAR.9,1911.

Patented Aug. 27, 1912.

2 SHEETS-SHEET 1.

INVEN TOR Jacob Kaufman]:

J. KAUFMANN.

HARNESS FOR GROSS WEAVING.

1 APPLICATION FILED MAR. 9, 1911.-

Patented Aug. 27, 1912.

2 SHEETS-SHEET 2 ZZI laid,

INVENTOR A TTORNEY WITNESSES JACOB KAUFMANN, Fv PHILADELPHIA, BENNSYLVANIAI, ASSIGNOR TO STEEL HEDDI E MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORA- TION OF PEN N SYLVANIAJ HARNESS FOR GROSSrWEAVING.

v Specification of Letters Patent.

Application filed March 9, 1m. Serial erases.

To all whom it may concern Be it known that I, JACOB -KAUFMANN, a

' citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented following is a specification.

My invention relates to loom harness for use in that method of weaving known as cross-weaving, sometimes called doupweaving or! gauze weaving, and in which the warp threads, arranged in pairs, are crossed or twisted about each other at. as many points in the shed as may be; desirable, either for a succession of picks or for single picks arranged according to a patternor de signto be produced.

The principal objectof my invention is to provide a metal harness for cross-weaving which will be simple, durable and eficient for all classes of cross-weaving, but which is also particularly useful in weaving the deer kinds of such fabrics to producewhieh it has" heretofore been necessary to employ the short-lived cotton harness.

A further object of my invention is to produce a harness for cross-weaving in which I all possibility of fouling of the warp threads willbe eliminated.

The nature and characteristic featum of my invention will be more readily understood from the following description taken in connection with the accompanying drawings forming part hereof, in which- Figure 1 is a vertical elevation of one set of heddles for cont-rolling a pair of warp ends, the harness frame bars upon which the hwdles are mounted being shown in section; Fig. 2 is an enlarged detail view of the central portion of the same, the heddles wing shown in shifted relationship; Figs. 3 and 4 are respectively face and edge views of the central portion of the guide or lifting heddles shown in Fig. 1; Fig. 5 is an enla detail view of the eye end of the doup heddle or needle; Figs. 6 and 7 are respectively face and edge views of the complete doup heddle or needle detached; Fig. 8 is a view similar to Fig. 1, but showing the arran ment of the heddles for jacquard control; Fig. 9 is a view similar to Fig. 2 but shove E 111g a modified form of guide or lifting hed- ,d'l'es, and Figs. 10 and 11 are respectively I taco and edge views of the central portion of the guide or lifting hed'olle shown in Fig. 9-.

certain new and useful Improvements in Harness for Cross-Weaving, of which the Referring now more particularly to Figs. 1 to 'Z of the drawings, in the particular embodiment of my invention there shown, 12 is the doup heddl e or needle which is preferahl y made by punching and stamping from 12 are curved toward and terminate in a bluntpoint 46, while the inner under margins 16 of the eye end 13 are similarly curved and meet in the central apex 17. De-- pending downwardly from the eye end 13 are two legs 18 which terminate at their lower extremities in enlarged portions 19 each of which is provided with a slot 10 for mounting on the rods 20- ofthe harness frame for the control of the doup heddles. The enlarged portions 19 or the lower ends of the legs of the doup heddles may if desired he provided with offsets 4:1 to properly space or separate the same on the rods 20. There are provided two guide heddles 21 each of which has a central eye 22 which may be formed: as shown in Figs. 1, 3 and 4 by slitting and laterally expanding the central portion of the guide heddle 21 to form an oflset central shank 28 and two ofiset side shanks 24 wherehythe doup heddle may be mounted and maintained in the eye 22 in a plane parallel to the planes of the guide heddles 21 and parallel to the general extension of the warp ends. it being understood that the arrangement of the central shanh 23 and thetwo side shanks 24 will serve to prevent the dorm heddle 12 from twisting with respect to the guide or lifting heddles 21 when the same are actuated. The guide or lifting heddles 21 are provided at their upper and lower ends respectively with slots or moitises, 25 and 26 for mounting on the respective upper and lower rods 27 and 28 of their individual harness frames.

The operation of the structure as so far set forth may now be explained. The doup warp as before stated, and as shown in Figs. 1 and 2, asses through the eye 14 of the doup hed le or needle 12, while the other or standard warp. passes loosely between the two guide or lifting heddles '21 so as not to be directly shifted thereby, the crossing or twisting of the threads being accomplished by the lifting of the doup thread 29 on the one side or the other, as the case may be, of the standard thread 30. The guide or lifting heddles 21 in their respective sets are raised by any of the common forms of mechanism for operating loom harness and it will be seen that accordingly as one or the other of the guide or lifting heddles 21 is raised, the doup thread 29 will be lifted to the one side or the other of the standard thread 30, and the crossing of the warp ends in the weave thus accomplished. It will be seen that the upper end or point 46 of the doup heddle 12 will be covered or pro- 1 tected by the central shank 23 of the guide or lifting heddle which may be operating the same, and that the possibility of fouling of the standard thread 30 will thereby be prevented, this relative location of the parts being insuredby the conformation of the inner margins 16 at the upper end of doup heddle, as the apex 17 will seat itself in the lower end of the eye 22 of the guide or lifting heddle 21 and thereby properly center the upper end of the doup heddle 12 with respect thereto.

In Fig. 8 there is shown an arrangement which may be used for acquard control where it'is desired to utilize the crossing of the threads to effect a pattern in the weave;

in this case instead of the lower slotted ends 19 of the doup heddle 12 being mounted on separate harness frame 'rods, they are brought together and a single lingo 31 is hooked in the openings 40 of both legs of the doup heddle 12which are brought together for this purpose. One of the guide or lifting heddles 21 in this instance is mounted on a harness frame rod 28 while the other heddle 21, which is the one controlled by the jacquard mechanism. has its lower end also' provided with a lingo'33. The operation of this device in connection with a jacquard mechanism will be readily understood, it being sufficient merely to state that the heddle 21 which is controlled in the harness frame may be operated at regular picks to'cause the weaving of the doup and standard threads respectively side byside. but when the" pattern is to appear in the fabric the'jacquard card will at that time cause the operation of the heddle 21" to therebycause the doup thread tocross over to the other side of the standard thread 30. The lingoes 31 and 33 will assist in the control of the respective doup and lifting heddles to the extent of returning the same to their lowermost positions when the acquard.

mechanism is inoperative.

In Fig. 9 there is shown a modified form of guide or lifting heddle 21' in which the central eye is formed by slotting and expending the resulting shanks 34: and 35 sidewise; in this case the shanks 3 1 and 35 of the central 'eye 36 serve to maintain the doup heddle 12 in proper relationship, the said shanks 34 and 35 also being ofiset out of the main plane of the heddle 21 and the upper shoulder of the offsets being at a pointslightly above the point of the doup heddle 12 so as to properly guide the standard thread 30 and prevent fouling of the same over the point of said doup heddle.

It will be seen that the harness herein described may be readily made by punching and stamping from thin flat metal, and that comparatively little width is required for each complete set of heddles for a pair of warp ends, so that a great many sets may be arranged in a given width and the harness employed for weaving the finer grades of cross-woven fabrics where heretofore it has been necessary to employ cotton doups with their attendant annoyances due to the quick cutting through from the friction of the passing threads.

Having thus characteristic features of my invention what I claim as new and desire to secure by Letters Patent is:

1. Harness for cross-weaving comprising a doup heddle made of thin flatmetal and having a warp eye in one end and two legs extending from the eye portion, and two guide or lifting heddles made of thin flat metal each having a centrally disposed eye,

each leg of the doup heddle passing through for cross-weaving comprising described. the nature and having a warp eye in one end and two legs extending from the eye portion, and two guide or lifting heddles made of thin flatmetal each having a centrally disposed eye,

each leg of the doup heddle passing through the eye of a respective lifting heddle, and

means for preventing rotation of the doup.

heddle with respect to the lifting heddles, said means comprising a central shank and two side shanks of the eye of the lifting heddle, said shanks being offset out of the main plane of the lifting heddle.

3. Harness for cross-weaving comprising a doup heddle made of thin flat metal and having a warp eye in one end and two legs extending from the eye portion, and'two guide or lifting heddles made of thin flat metal each having a centrally disposed eye,

each'leg of the doup heddle passing through In testimony whereof, I have hereunto the eye ofa respective liftlng heddle, and signed my name in the presence of two 10 the inne' Ilnargins of the eye portion of the witnesses.

doup he (1 e terminatin in an apex to thereby center the doup he dle with respect to JACOB KAUFMANN' the eye of the lifting heddle, the shanks of Witnesses:

the eye of each lifting heddle being ofiset 'LILLIAN H. NEVEIL,

out of the main plane of said lifting heddle. M. J QMARTIN. 

